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Advanced O&M Command Reference

OceanStor 2000, 5000, and 6000 V3 Series V300R006

This document is applicable to OceanStor 2200 V3, 2600 V3 Video Surveillance Edition, 2600 V3, 5300 V3, 5500 V3, 5600 V3, 5800 V3, and 6800 V3. Based on the CLI, this document describes how to use various commands classified by functionsand how to set the CLI and manage the storage system through these commands. The document that you browse online matches the latest C version of the product. Click Download to download documents of other C versions.
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cache show obj

cache show obj

Function

The cache show obj command is used to view cache object information. This command is used when you want to view information about all cache objects or details about a cache object.

Format

cache show obj layer info filter [ num ]

cache show obj volumeId [ attribute ]

Parameters

Parameter

Description

Value

cnt

Number of cache object that you want to view.

-

layer

Range of cache information that you want to view.

The value can be "a" or "v" or "s".

  • "a": volume cache stripe cache.
  • "v": volume cache.
  • "s": stripe cache.

info

Type of cache information that you want to view.

The value can be "base", "cnt", "destage", "read", "forcemirror", "switch", "iosteptime" or "arctate".

  • "base": cache base.
  • "cnt": cache object statistic count.
  • "destage": destage info on cache object.
  • "read": read info on cache object.
  • "forcemirror": forcemirror info on cache object.
  • "switch": cache object attribute switch.
  • "iosteptime": I/O time info.
  • "arctate": arc state.

filter

Information type.

  • If first parameter is "cnt", value can be "all", "io", "faultchunk", "faultpage", "wc(writechunk)" or "rc(readchunk)".
  • If first parameter is "switch", value can be "all", "wt(writethrought)", "wm(writemirror)","wmd(workmode)" "local","normaldsg","sysdsg","nomirrorlun" or "singlectrl".

num

Number of displayed items.

The value ranges from 0 to 2^64 minus one.

volumeId

Volume ID.

The value ranges from 0 to 2^64 minus one.

attribute

Attribute.

The value can be "concur", "hitratio", "state", or "posswaitlist", where:

  • concur: concurrent info on the cache object.
  • hitratio: hit ratio statistics.
  • state: state info on the cache object.
  • posswaitlist: retained reserve waiting queue of the cache object.

Views

Diagnostic view

Usage Guidelines

None

Example

View the first 10 items of object information of Layer 1 cache.

admin:/diagnose>cache show obj v cnt all 
Total obj num(34):  
                        ----io cnt----- --------page cnt--------- ---pageunit cnt---  ------chunk cnt------------------  --quota cnt-- 
  volumeid              io mirrorCnt clean dirty parity readpu writepu read     write     fault     dsg       dirty      
  --------              --  -------- ----- ----- ------ ------ ------ ----     -----     -----     -----     -----     
  0x0                   0     0           0        0        0         0        0         0        0         0         0         0          
  0x1000000000          0     0           0        0        0         0        0         0        0         0         0         0          
  0x2000000000          0     0           1        66       0         70       66        67       66        0         0         66         
  0x4000000000          80 0           191064 500819 0         690686 457134 507086 440401 0         0         500819     
  0x5000000000          0     0           1        0        0         1        0         1        0         0         0         0          
  0x96                  0     0           0        0        0         0        0         0        0         0         0         0          
  0x1000000096          0     0           0        0        0         0        0         0        0         0         0         0          
  0x2000000096          0     0           0        0        0         0        0         0        0         0         0         0          
  0x4000000096          0     0           1      0        0         1        0         1        0         0         0         0          
  0x1000000100000000 0     0           2134     0        0         194      0         61       0         0         0         0          
  0x5000000096          0     0           1        0        0         1        0         1        0         0         0         0          
Find Volume cache base num(11):

System Response

The following table describes the parameter meanings.

Parameter

Meaning

volumeid

Volume ID.

io

Read or write cache I/O count.

mirrorCnt

Mirror I/O count.

clean

Clean page count.

dirty

Dirty page count.

read

Read chunk count.

writepu

Write pageunit count.

readpu

Read pageunit count.

parity

Parity page count.

write

Write chunk count.

fault

Fault chunk count.

dsg

Destage chunk count.

quota cnt

Dirty page quota count.

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Updated: 2019-07-12

Document ID: EDOC1000138402

Views: 606951

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